> For the complete documentation index, see [llms.txt](https://docs.zapsign.com.br/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zapsign.com.br/zapsign-api/english/timestamp/criar-documento.md).

# Add timestamp

The Timestamp is an advanced security solution that enhances the document signing process by recording not only the date and time of the signer's device but also the date and time from an external server approved by a Trusted Timestamp Authority.

***

### Adding Timestamp to Documents

Using this endpoint, you can add a timestamp to your documents, ensuring their existence at a specific moment and securing the integrity of the digital signature.

<mark style="color:green;">`POST`</mark> `https://api.zapsign.com.br/api/v1/timestamp/`

| Name          | Value                          |
| ------------- | ------------------------------ |
| Content-Type  | `application/json`             |
| Authorization | `API_TOKEN_DA_SUA_ORGANIZAÇÃO` |

**Body**

**This field is a string**. Simply provide the public URL of your document (PDF or DOCX) up to 10MB. Alternatively, you can convert your file to a base64 string and include it in this parameter.

```json
{
    "url": "<Add_your_url_or_base64>"
}
```

#### Possible responses

{% tabs %}
{% tab title="200 Document created successfully." %}

```javascript
{
    "url": "https://zapsign.s3.amazonaws.com/pdf/62c2b027-d8fc-4392-xas75-f3c46c3cfc7a/d33336-4182-8c8b-ded5287e4c0f.pdf"
}
```

{% endtab %}

{% tab title="402 Payment Required" %}
{ "error": "Payment Required" \
}
{% endtab %}
{% endtabs %}

{% hint style="info" %}
[Contact a specialist](https://zapsign.co/contact-sales?hsCtaTracking=f29cb894-a383-4ae5-ad40-8567b0f3257e%7C29b2d094-e9d4-4165-b8f3-5c9c26eae155) to add this functionality to your plan!
{% endhint %}


---

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